The MS24694-C52 is a military standard (MS) aircraft structural machine screw, part of the MS24694 series (formerly AN509). It is designed for flush mounting applications where aerodynamic or surface smoothness is required, such as aircraft skins, fairings, access panels, and structural assemblies.

It features a 100° countersunk flat head with Phillips drive, allowing it to sit flush with the aircraft surface when installed. This reduces drag and prevents interference with airflow or adjacent components.

This specific dash number is typically a:

#10-32 UNF thread
Length: ~21/32 inch (0.641–0.688 in range)
Corrosion-resistant steel (passivated or cadmium plated depending on variant)
Key features include:

Military Standard: MS24694 series (AN509 equivalent)
Thread: #10-32 UNF (fine thread)
Head: 100° countersunk flat head
Drive: Phillips (cross recess)
Material: corrosion-resistant steel (passivated or plated)
High tensile strength (≈ 85,000–125,000 psi depending on spec variant)
Used in aircraft structural and airframe assemblies
Provides flush aerodynamic surface finish
Common in certified aircraft maintenance and OEM builds